content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.observable.internal.operators;
  
  import java.util.concurrent.atomic.AtomicInteger;
  
  import io.reactivex.common.*;
  import io.reactivex.common.disposables.CompositeDisposable;
  import io.reactivex.common.internal.utils.AtomicThrowable;
  import io.reactivex.observable.*;
  
  public final class CompletableMergeDelayErrorArray extends Completable {
  
      final CompletableSource[] sources;
  
      public CompletableMergeDelayErrorArray(CompletableSource[] sources) {
          this.sources = sources;
      }
  
      @Override
      public void subscribeActual(final CompletableObserver s) {
          final CompositeDisposable set = new CompositeDisposable();
          final AtomicInteger wip = new AtomicInteger(sources.length + 1);
  
          final AtomicThrowable error = new AtomicThrowable();
  
          s.onSubscribe(set);
  
          for (CompletableSource c : sources) {
              if (set.isDisposed()) {
                  return;
              }
  
              if (c == null) {
                  Throwable ex = new NullPointerException("A completable source is null");
                  error.addThrowable(ex);
                  wip.decrementAndGet();
                  continue;
              }
  
              c.subscribe(new MergeInnerCompletableObserver(s, set, error, wip));
          }
  
          if (wip.decrementAndGet() == 0) {
              Throwable ex = error.terminate();
              if (ex == null) {
                  s.onComplete();
              } else {
                  s.onError(ex);
              }
          }
      }
  
      static final class MergeInnerCompletableObserver
      implements CompletableObserver {
          final CompletableObserver actual;
          final CompositeDisposable set;
          final AtomicThrowable error;
          final AtomicInteger wip;
  
          MergeInnerCompletableObserver(CompletableObserver s, CompositeDisposable set, AtomicThrowable error,
                  AtomicInteger wip) {
              this.actual = s;
              this.set = set;
              this.error = error;
              this.wip = wip;
          }
  
          @Override
          public void onSubscribe(Disposable d) {
              set.add(d);
          }
  
          @Override
          public void onError(Throwable e) {
              if (error.addThrowable(e)) {
                  tryTerminate();
              } else {
                  RxJavaCommonPlugins.onError(e);
              }
          }
  
          @Override
          public void onComplete() {
              tryTerminate();
          }
  
          void tryTerminate() {
              if (wip.decrementAndGet() == 0) {
                  Throwable ex = error.terminate();
                  if (ex == null) {
                      actual.onComplete();
                  } else {
                      actual.onError(ex);
                  }
              }
          }
      }
  }
  